DL-Malic acid
Molecular Structure:
MDL:
MFCD00064212
Molecular Formula:
C4H6O5;HO2CCH2CH(OH)CO2H
Molecular Weight:
134.09
Alias:
(±)一羟基丁二酸,DL-羟基丁二酸,羟基丁二酸,DL-羟基琥珀酸
(±)-2-Hydroxysuccinic acid
DL-Hydroxybutanedioic acid
DL-Hydroxy succinic acid
(+/-)-butanedioic acid
1-Hydroxy-1,2-ethanedicarboxylic acid
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
DL-Malic acid |
99.9% |
100g |
RMB 198 |
现货 |
DL-Malic acid |
CP |
100g |
RMB 88 |
Consulting service |
DL-Malic acid |
AR |
100g |
RMB 52.8 |
Consulting service |
DL-Malic acid |
AR |
500g |
RMB 93.5 |
Consulting service |
Character:
苹果酸在正常情况下稳定,湿度高时有吸湿性。易溶于甲醇、乙醇、丙酮和其他许多极性溶剂。酸性较强,其0.001%水溶液pH值为3.80,0.01%者pH值为2.80,1%者pH值为2.35。离解常数k1为 4×10-4,k2为9×10-6。三斜晶系白色晶体。摩尔溶解热-20.516kJ/mol,粘度(SO2水溶液,25℃)6.5mPa·s。
密度:1.601
熔点:129-133 °C
Quality Standard:
Q/(HG)SJ 412-92
项目Item 化学纯 分析纯
(CP) (AR)
含量(C4H6O5)Assay,% ≥ 99.0 99.5
熔点范围Melting range,℃ 128-130 126-130(2)
溶解试验Solubility 合格 合格
灼烧残渣(以硫酸盐计)Ignition residue,% ≤ 0.1 0.05
氯化物(Cl)Chloride,% ≤ 0.01 0.01
硫酸盐(SO4)Sulfate,% ≤ 0.02 0.01
铁(Fe)Iron,% ≤ 0.005 0.005
砷(As),Arsenic,% ≤ 0.0001 0.00005
重金属(以Pb计)Heavy metals,% ≤ 0.002 0.001
Storage:
避光、密闭、干燥阴凉处贮存。
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